#include <media/videobuf-core.h>
#define MAGIC_BUFFER 0x20070728
-#define MAGIC_CHECK(is, should) do { \
- if (unlikely((is) != (should))) { \
- printk(KERN_ERR "magic mismatch: %x (expected %x)\n", is, should); \
- BUG(); } } while (0)
+#define MAGIC_CHECK(is, should) \
+ do { \
+ if (unlikely((is) != (should))) { \
+ printk(KERN_ERR \
+ "magic mismatch: %x (expected %x)\n", \
+ is, should); \
+ BUG(); \
+ } \
+ } while (0)
static int debug;
module_param(debug, int, 0644);
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
-#define dprintk(level, fmt, arg...) do { \
- if (debug >= level) \
- printk(KERN_DEBUG "vbuf: " fmt , ## arg); } while (0)
+#define dprintk(level, fmt, arg...) \
+ do { \
+ if (debug >= level) \
+ printk(KERN_DEBUG "vbuf: " fmt, ## arg); \
+ } while (0)
/* --------------------------------------------------------------------- */
}
vb = q->int_ops->alloc(q->msize);
-
if (NULL != vb) {
init_waitqueue_head(&vb->done);
- vb->magic = MAGIC_BUFFER;
+ vb->magic = MAGIC_BUFFER;
}
return vb;
}
+EXPORT_SYMBOL_GPL(videobuf_alloc);
#define WAITON_CONDITION (vb->state != VIDEOBUF_ACTIVE &&\
vb->state != VIDEOBUF_QUEUED)
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_waiton);
int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf)
return CALL(q, iolock, q, vb, fbuf);
}
+EXPORT_SYMBOL_GPL(videobuf_iolock);
-void *videobuf_queue_to_vmalloc (struct videobuf_queue *q,
- struct videobuf_buffer *buf)
+void *videobuf_queue_to_vmalloc(struct videobuf_queue *q,
+ struct videobuf_buffer *buf)
{
if (q->int_ops->vmalloc)
return q->int_ops->vmalloc(buf);
void videobuf_queue_core_init(struct videobuf_queue *q,
- struct videobuf_queue_ops *ops,
+ const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
enum v4l2_buf_type type,
init_waitqueue_head(&q->wait);
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
/* Locking: Only usage in bttv unsafe find way to remove */
int videobuf_queue_is_busy(struct videobuf_queue *q)
}
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
/* Locking: Caller holds q->vb_lock */
void videobuf_queue_cancel(struct videobuf_queue *q)
}
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
/* --------------------------------------------------------------------- */
}
return field;
}
+EXPORT_SYMBOL_GPL(videobuf_next_field);
/* Locking: Caller holds q->vb_lock */
static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
static int __videobuf_mmap_free(struct videobuf_queue *q)
{
int i;
- int rc;
if (!q)
return 0;
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
- rc = CALL(q, mmap_free, q);
+ for (i = 0; i < VIDEO_MAX_FRAME; i++)
+ if (q->bufs[i] && q->bufs[i]->map)
+ return -EBUSY;
q->is_mmapped = 0;
- if (rc < 0)
- return rc;
-
for (i = 0; i < VIDEO_MAX_FRAME; i++) {
if (NULL == q->bufs[i])
continue;
q->bufs[i] = NULL;
}
- return rc;
+ return 0;
}
int videobuf_mmap_free(struct videobuf_queue *q)
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_free);
/* Locking: Caller holds q->vb_lock */
int __videobuf_mmap_setup(struct videobuf_queue *q,
for (i = 0; i < bcount; i++) {
q->bufs[i] = videobuf_alloc(q);
- if (q->bufs[i] == NULL)
+ if (NULL == q->bufs[i])
break;
q->bufs[i]->i = i;
q->bufs[i]->bsize = bsize;
switch (memory) {
case V4L2_MEMORY_MMAP:
- q->bufs[i]->boff = bsize * i;
+ q->bufs[i]->boff = PAGE_ALIGN(bsize) * i;
break;
case V4L2_MEMORY_USERPTR:
case V4L2_MEMORY_OVERLAY:
if (!i)
return -ENOMEM;
- dprintk(1, "mmap setup: %d buffers, %d bytes each\n",
- i, bsize);
+ dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize);
return i;
}
+EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
int videobuf_mmap_setup(struct videobuf_queue *q,
unsigned int bcount, unsigned int bsize,
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
int videobuf_reqbufs(struct videobuf_queue *q,
struct v4l2_requestbuffers *req)
count = VIDEO_MAX_FRAME;
size = 0;
q->ops->buf_setup(q, &count, &size);
- size = PAGE_ALIGN(size);
- dprintk(1, "reqbufs: bufs=%d, size=0x%x [%d pages total]\n",
- count, size, (count*size)>>PAGE_SHIFT);
+ dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n",
+ count, size,
+ (unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT));
retval = __videobuf_mmap_setup(q, count, size, req->memory);
if (retval < 0) {
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_reqbufs);
int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_querybuf);
-int videobuf_qbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b)
+int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
struct videobuf_buffer *buf;
enum v4l2_field field;
q->ops->buf_queue(q, buf);
spin_unlock_irqrestore(q->irqlock, flags);
}
- dprintk(1, "qbuf: succeded\n");
+ dprintk(1, "qbuf: succeeded\n");
retval = 0;
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
if (b->memory == V4L2_MEMORY_MMAP)
return retval;
}
-
+EXPORT_SYMBOL_GPL(videobuf_qbuf);
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock)
return retval;
}
-
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer(struct videobuf_queue *q,
struct videobuf_buffer **vb, int nonblocking)
}
int videobuf_dqbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b, int nonblocking)
+ struct v4l2_buffer *b, int nonblocking)
{
struct videobuf_buffer *buf = NULL;
int retval;
list_del(&buf->stream);
memset(b, 0, sizeof(*b));
videobuf_status(q, b, buf, q->type);
-
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_dqbuf);
int videobuf_streamon(struct videobuf_queue *q)
{
spin_unlock_irqrestore(q->irqlock, flags);
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamon);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_streamoff(struct videobuf_queue *q)
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamoff);
/* Locking: Caller holds q->vb_lock */
static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
retval = q->read_buf->size;
}
- done:
+done:
/* cleanup */
q->ops->buf_release(q, q->read_buf);
kfree(q->read_buf);
q->read_buf = NULL;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_one);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_read_start(struct videobuf_queue *q)
q->bufs[i] = NULL;
}
q->read_buf = NULL;
-
}
int videobuf_read_start(struct videobuf_queue *q)
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_read_start);
void videobuf_read_stop(struct videobuf_queue *q)
{
__videobuf_read_stop(q);
mutex_unlock(&q->vb_lock);
}
+EXPORT_SYMBOL_GPL(videobuf_read_stop);
void videobuf_stop(struct videobuf_queue *q)
{
mutex_unlock(&q->vb_lock);
}
-
+EXPORT_SYMBOL_GPL(videobuf_stop);
ssize_t videobuf_read_stream(struct videobuf_queue *q,
char __user *data, size_t count, loff_t *ppos,
break;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_stream);
unsigned int videobuf_poll_stream(struct file *file,
struct videobuf_queue *q,
mutex_unlock(&q->vb_lock);
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-int videobuf_mmap_mapper(struct videobuf_queue *q,
- struct vm_area_struct *vma)
+int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
{
int retval;
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
#ifdef CONFIG_VIDEO_V4L1_COMPAT
int videobuf_cgmbuf(struct videobuf_queue *q,
mbuf->size = 0;
for (i = 0; i < mbuf->frames; i++) {
mbuf->offsets[i] = q->bufs[i]->boff;
- mbuf->size += q->bufs[i]->bsize;
+ mbuf->size += PAGE_ALIGN(q->bufs[i]->bsize);
}
return 0;
EXPORT_SYMBOL_GPL(videobuf_cgmbuf);
#endif
-/* --------------------------------------------------------------------- */
-
-EXPORT_SYMBOL_GPL(videobuf_waiton);
-EXPORT_SYMBOL_GPL(videobuf_iolock);
-
-EXPORT_SYMBOL_GPL(videobuf_alloc);
-
-EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
-EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
-EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
-
-EXPORT_SYMBOL_GPL(videobuf_next_field);
-EXPORT_SYMBOL_GPL(videobuf_reqbufs);
-EXPORT_SYMBOL_GPL(videobuf_querybuf);
-EXPORT_SYMBOL_GPL(videobuf_qbuf);
-EXPORT_SYMBOL_GPL(videobuf_dqbuf);
-EXPORT_SYMBOL_GPL(videobuf_streamon);
-EXPORT_SYMBOL_GPL(videobuf_streamoff);
-
-EXPORT_SYMBOL_GPL(videobuf_read_start);
-EXPORT_SYMBOL_GPL(videobuf_read_stop);
-EXPORT_SYMBOL_GPL(videobuf_stop);
-EXPORT_SYMBOL_GPL(videobuf_read_stream);
-EXPORT_SYMBOL_GPL(videobuf_read_one);
-EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-
-EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_free);
-EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff